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Open in new tab Download slide Open in new tab Download slide OBJECTIVES The appropriateness of moderate aortic regurgitation treatment during mitral valve (MV) surgery remains unclear. The goal of this study was to evaluate the immediate and long-term outcomes of patients with moderate aortic regurgitation at the time of MV surgery. METHODS We included 183 patients admitted to our institution for elective treatment of MV disease between 2004 and 2018, in whom moderate aortic regurgitation was diagnosed during preoperative evaluation. One hundred and twenty-two patients underwent isolated MV surgery (study group) whereas 61 patients underwent concomitant MV surgery and aortic valve replacement (control group). RESULTS One death (0.8%) occurred in the study group, and 3 deaths (4.8%) occurred in the control group (P  = 0.52). The rate of the most common postoperative complication was similar between the 2 groups. At 12 years, the cumulative incidence function of cardiac death, with non-cardiac death as a competing risk, was 4.7 ± 2.8% in the study group; no cardiac deaths were observed in the control group (P  = 0.078). At 6 and 12 years, in the study group, the cumulative incidence function of aortic valve reintervention, with death as a competing risk, was 2.5 ± 1.85% and 19 ± 7.1%, respectively. CONCLUSIONS The appropriate management of moderate aortic regurgitation at the time of MV surgery deserves a careful evaluation by balancing the reintervention rate with the age, the operative risk and the life expectancy of the patient. Our findings suggest that a patient-tailored approach is the key to achieving the best clinical outcome for each individual patient. [ABSTRACT FROM AUTHOR]